mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-18 05:58:30 +00:00
24 lines
639 B
C
24 lines
639 B
C
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <dlfcn.h>
|
|
|
|
int security_load_policy(void *data, size_t len) {
|
|
// Make sure our next exec won't get bugged
|
|
unsetenv("LD_PRELOAD");
|
|
unlink("/dev/preload.so");
|
|
|
|
int (*load_policy)(void *, size_t) = dlsym(RTLD_NEXT, "security_load_policy");
|
|
// Skip checking errors, because if we cannot find the symbol, there
|
|
// isn't much we can do other than crashing anyways.
|
|
int result = load_policy(data, len);
|
|
|
|
// Wait for ack
|
|
int fd = open("/sys/fs/selinux/enforce", O_RDONLY);
|
|
char c;
|
|
read(fd, &c, 1);
|
|
close(fd);
|
|
|
|
return result;
|
|
}
|